what will the temperature be?
I actually did once hear a weather man say this before.
2007-03-20 04:57:05 · 8 answers · asked by tooqerq 6 in Science & Mathematics ➔ Weather
I just thought it was a funny thing for a weather man to say. No one has a sense of humor anymore.
What if the weather man had said it was 0K and it was going to be twice as warm tomorrow (and yes, I know 0K has never been recorded).
2007-03-20 05:11:58 · update #1
Ha
Very good!!!!
2007-03-20 05:08:04 · answer #1 · answered by ghds 4 · 0⤊ 0⤋
The weather man was either trying to make a joke, or he was just being scientifically irresponsible. It is essentially meaningless to refer to multiples of values in a scale that is not absolute, and neither Fahrenheit nor Celcius is an absolute scale. Suppose it is 32 degrees Fahrenheit, which is 0 degrees Celcius. "Twice" this would be 2*32 = 64 degrees Fahrenheit (which is 17.8 degrees Celcius) or 2*0 = 0 degrees Celcius, which are obviously two different things. If doubling the temperature gives a different result depending on what temperature scale you use, the operation must be meaningless.
In an absolute scale, you don't have this problem. 32 degrees Fahrenheit is 492 degrees Rankine and 273 Kelvins. Twice this is 984 degrees Rankine or 546 Kelvins, which either way is 524 degrees Fahrenheit or 273 degrees Celcius; the values are equal. Instead, you have the problem that surface temperatures in the inhabited regions of Earth are so much higher than absolute zero that doubling such temperatures gives results that are much higher than temperatures on Earth.
So, in weather reports, "twice as warm" probably means "twice as high above zero in the scale in which the temperature is reported," but it's really an unclear expression to use.
2007-03-20 05:01:33 · answer #2 · answered by DavidK93 7 · 0⤊ 0⤋
The Farenheit and Celcius scales are both relative, not absolute. This means that 0 is just arbitrary...it does not acutally mean the lowest possible temperature. Beacause of this, doubling or halving the temp. does not actually mean that it is twice as hot or cold-- e.g. 100 degrees is not twice as hot a 50 degrees.
The Kelvin temperature scale is an absolute scale. 0 Kelvins is called absolute zero...at that point all molecular motion stops and it is impossible to get any colder.
Celsius Temp = Kelvin Temp - 273 degrees.
So, to answer your question, If it is 0 degrees Celsius today, then that is 273 Kelvins. If it is twice as warm tomorrow it would be 546 Kelvins, or 273 Celsius, or 523 Farenheit.
2007-03-20 05:05:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
If he said in F. then convert it to C. Then multiply by 2.
2007-03-20 05:02:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Not this stupid question again ! Convert to another scale and get an equally wrong answer.
2007-03-20 05:24:52 · answer #5 · answered by Gene 7 · 0⤊ 0⤋
Nitpicker.
2007-03-20 05:01:21 · answer #6 · answered by Anonymous · 0⤊ 1⤋
It would still be cold. Plust you're just being nitpicky
2007-03-20 05:05:34 · answer #7 · answered by cmm 4 · 0⤊ 0⤋
Hi. That means it will be zero again.
2007-03-20 05:00:40 · answer #8 · answered by Cirric 7 · 0⤊ 0⤋